Coilover Recommendation

[Tones]

Since I track and run camber plates, and wanted more room to stuff wider tires I went with 65mm ID (2.56").

I just ran the setup at Laguna yesterday after making adjustments with a spacer and unloading some of the spring preload. Car feels more stable and easier to control. You do have to get used to a bit more dive, but if you are not running 1" off the ground with a huge splitter, you don't need to worry about it .

Highway/city driving, the car feels in harmony settling over bumps. You don't have the jittery ride where the front springs are so stiff (high frequency) that you are running a pitch setup and have the front settle disjointly before the rear does.

You need to try it, I don't think everyone is a believer, but I think the few guys who have tried to get flat ride on this/old forum love it.

If you are running proper racecar with serious aero, this is where I might deviate a bit from flat ride. At super low ride height with a long nose (splitter) with slicks and grippy pads you generate a tonne of gs to force the car into a dive, so you need the front frequencies super high, so that the splitter doesnt break off. But now, typing out this last part, I guess flat ride would just tell you to jack up your rear frequencies.

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Where I live there are only a few mountian roads and no real fun hpde. Ive been really happy with them so far other than those few roads. I would like to get a sway bar as the roll that comes in just past the turn in is holding the car back. Also need to get camber plates so I can get more than - 1 up front.

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[mrgizmo04]

I was looking into flat ride than stopped figuring it out. 90% of the time they are great. Are you running the stock spring sizes or switched to the 2.5 di?

What changed would you say with the new spring set up.

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Since I track and run camber plates, and wanted more room to stuff wider tires I went with 65mm ID (2.56").

I just ran the setup at Laguna yesterday after making adjustments with a spacer and unloading some of the spring preload. Car feels more stable and easier to control. You do have to get used to a bit more dive, but if you are not running 1" off the ground with a huge splitter, you don't need to worry about it .

Highway/city driving, the car feels in harmony settling over bumps. You don't have the jittery ride where the front springs are so stiff (high frequency) that you are running a pitch setup and have the front settle disjointly before the rear does.

You need to try it, I don't think everyone is a believer, but I think the few guys who have tried to get flat ride on this/old forum love it.

If you are running proper racecar with serious aero, this is where I might deviate a bit from flat ride. At super low ride height with a long nose (splitter) with slicks and grippy pads you generate a tonne of gs to force the car into a dive, so you need the front frequencies super high, so that the splitter doesnt break off. But now, typing out this last part, I guess flat ride would just tell you to jack up your rear frequencies.

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[Tones]

Stock Ohlins rates come too pitchy, agree with above it is not a damping issue.

Try flat ride, but other than swapping spring rates you also need to add a stiffer bar to control roll.

I went to 375f, 670r, car feels a lot better, but I am going to put in 336f next.

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I was looking into flat ride than stopped figuring it out. 90% of the time they are great. Are you running the stock spring sizes or switched to the 2.5 di?

What changed would you say with the new spring set up.

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[8000RPM]

I’ve ran Koni Yellow and Dinan springs on two different cars. Much better than stock and for the money, you can’t beat it. Of course that’s my opinion and there are as many opinions as there are people posting in this thread.

General consensus on Koni yellow / Dinan vs. Koni yellow / Eibach? I currently run the latter with GC street plates.

[Exclusivs]

^Cool thanks Giz


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[mrgizmo04]

Which RSMs are you running again Giz?


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I'm on GC street rsm and GC street camber plate in front.

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[jixer77]

I've got BCs with the Swift springs, the setup came installed on the car when I bought it. Still have the stock components thankfully though.
Are BCs really the trash people claim? The car rides quite nice, isn't too harsh and tracks great around corners.
I dont have much of anything to compare it with as I have never been in another E46 M3 w/ coilovers...

I have the same situation where the car came with BC set up. I don’t have anything to compare it to but would love to replace them.
Only issue I’ve had was front left end link was gone so I replaced them with tms adjustable end links.


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[Exclusivs]

I'm on turner front bar. Car is dual duty and has been seeing a lot more canyon and track time, while still hauling the baby and groceries when needed.

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Which RSMs are you running again Giz?


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[mrgizmo04]

What front sway bar did you go with? Is your car mostly a DD?

I'm on turner front bar. Car is dual duty and has been seeing a lot more canyon and track time, while still hauling the baby and groceries when needed.

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[Albino09]

OP, if you decide on a coilover to run I'll help you get there by buying those Dinan springs off you. 💰💰

[r4dr]

Stock Ohlins rates come too pitchy, agree with above it is not a damping issue.

Try flat ride, but other than swapping spring rates you also need to add a stiffer bar to control roll.

I went to 375f, 670r, car feels a lot better, but I am going to put in 336f next.

Sent from my SM-G950U using Tapatalk

What front sway bar did you go with? Is your car mostly a DD?

[mrgizmo04]

Stock Ohlins rates come too pitchy, agree with above it is not a damping issue.

Try flat ride, but other than swapping spring rates you also need to add a stiffer bar to control roll.

I went to 375f, 670r, car feels a lot better, but I am going to put in 336f next.

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[r4dr]

What ever the springs that come with the ohlins are. I think its 450/600

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If it's the BMS Mi30 kit, it's 400/630. Comes out to a 0.96 bounce frequency ratio according to FCM's spreadsheet. If you wanted to try swapping springs out, I bet it would feel a lot better with 300# springs up front.

[Tones]

What were your spring rates? Sounds more of a front/rear ride frequency issue than damping issue if you have excessive pitching.

What ever the springs that come with the ohlins are. I think its 450/600

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[timmo]

By wavy I mean roads that are not laid flat. As in its a straight line and the car just starts rocking back and forth till you get past that bad stretch.

What were your spring rates? Sounds more of a front/rear ride frequency issue than damping issue if you have excessive pitching.